There are some tokens in my ethereum wallet that have lost value to the extent I don't think they can ever recover even if the bull market starts tomorrow due to the level of competition in the altcoin market. I also bought some coins but can't remember the password or name of exchange i bought them on (thinking it was cryptopia) I didn't bother transferring it off the exchange and most of them were bought around 1satoshi.
Back to my ethereum wallet, each time I see those worthless token I just laugh and continue with what I login my wallet to do. If you ask me why I'm still holding does tokens in my wallet I can't give a reply. Why are you still holding those shitcoins sorry altcoin
Everyone learns slowly with time and mistakes similarly everyone invests in bad projects and then regrets later it happens to all of us and yes staying in eth is the best thing to do.